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3 years ago

PLSSSSS HELP ASAP!!!! PLS ANSWER LIKE ALL OF EM COST 10 points!!!

Mathematics

1 answer:

docker41 [41]3 years ago

6 0

Part A:

Electricity Company | Rate Charged | Rate Rounded |

Atlas Energy 12.065 12.070

Big City Light 9.138 9.140

Connex 9.143 9.140

Dynamon Power 9.707 9.710

ElectriCo 9.503 9.500

Part B:

Big City Light and Connex.

Part C:

Two companies can have the same rate when they are rounded because two numbers can be rounded to the same number although they are different numbers. For example; 9.138 and 9.143 can both be rounded to 9.140.

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The 13th term of a geometric sequence is 16, 384 and the first term is 4. What is the common ratio?

AleksAgata [21]

Answer:

$\large \boxed{2}$

Step-by-step explanation:

The formula for the nth term of a geometric sequence is

aₙ = a₁rⁿ⁻¹

In your geometric sequence, a₁ = 4 and a₁₃ = 16 384.

$\begin{array}{rcl}16384 & = & 4r^{(13 - 1)}}\\16384 & = & 4r^{12}\\4096 & = & r^{12}\\3.6124 & = & 12 \log r\\0.30102 & = & \log r\\r & = & 10^{0.30102}\\ & = & \mathbf{2}\\\end{array}\\\text{The common ratio is $\large \boxed{\mathbf{2}}$}$

Check:

$\begin{array}{rcl}16384 & = & 4(2)^{12}\\16384 & = & 4(4096)\\16384 & = & 16384\\\end{array}$

It checks.

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3 years ago

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vova2212 [387]

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3 years ago

Which could be a conditional relative frequency table ???

user100 [1]

Answer:

The table that represents the conditional relative frequency is:

A B Total

C 0.25 0.75 1.0

D 0.35 0.65 1.0

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Step-by-step explanation:

We know that a conditional relative frequency table is one:

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In which the entries in each column is divided by the column total.

i.e. the frequency or quantity of an item is being compared either to row or to the column total.

Hence, from the given options, the table that represent the conditional relative frequency is:

A B Total

C 0.25 0.75 1.0

D 0.35 0.65 1.0

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